@media screen and (min-width: 1599px) and (max-width: 1919px){
    /* 第二屏样式 */
    .fullcontent {
        position: absolute;
        left: 50%;
        top: 0;
        margin-left: -550px;
        width: 1100px;
        height: 100%;
    }

    .piti {
        position: relative;
        text-align: center;
        width: 100%;
        margin-left: 49px;
        height: 170px;
        float: left;
    }

    .piti .titie_1 {
        position: relative;
        top: -90px;
        opacity: 0;
        left: 50%;
        margin-left: -122px;
        width: 146px;
        height: 170px;
        background: url("../mdimg/sen2_t1.png") no-repeat;
    }

    #section2 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 110px;
        height: 32px;
        background: url("../mdimg/sent_2.png") no-repeat;
    }

    #section2 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -128px;
        opacity: 0;
        width: 105px;
        height: 7px;
        background: url("../mdimg/sent_t3.png") no-repeat;
    }

    .introduction_bottom {
        float: left;
        margin-top: 50px;
    }

    /* 第三屏样式 */
    #section3 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 111px;
        height: 31px;
        background: url("../mdimg/sent_t4.png") no-repeat;
    }

    #section3 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -148px;
        opacity: 0;
        width: 137px;
        height: 8px;
        background: url("../mdimg/sent_t5.png") no-repeat;
    }

    .Project_box .Project_left {
        width: 400px;
    }
    .Project_middle {
        width: 356px;
        height: 480px;
    }

    .Project_right {
        width: 300px;
        margin-top: 224px;
    }

    .Project_left .Project_one {
        height: 218px;
    }

    .Project_left .Project_two {
        height: 312px;
    }

    /* 第四屏样式*/
    #section4 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 109px;
        height: 31px;
        background: url("../mdimg/sent_t6.png") no-repeat;
    }

    #section4 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -100px;
        opacity: 0;
        width: 53px;
        height: 7px;
        background: url("../mdimg/sent_t7.png") no-repeat;
    }

    .Team_member {
        width: 100%;
        height: 540px;
        float: left;
        margin-top: 30px;
    }

    .Team_member .swiper-container .swiper-wrapper .swiper-slide .swiper_img {
        border: 10px solid #7a787a;
        height: 380px;
        position: relative;
    }

    .Team_member .swiper-container .swiper-wrapper .swiper-slide .swiper_img span {
        float: left;
        height: 380px;
        overflow: hidden;
    }

    .Team_member .swiper-container .swiper-wrapper .swiper-slide .swiper_img span img {
        width: 100%;
        height: auto;
    }

    /* 第五屏样式*/
    #section5 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 111px;
        height: 31px;
        background: url("../mdimg/sent_t8.png") no-repeat;
    }

    #section5 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -114px;
        opacity: 0;
        width: 83px;
        height: 7px;
        background: url("../mdimg/sent_t9.png") no-repeat;
    }

    .Media_box .Media_left {
        width: 346px;
        height: 520px;
        float: left;
    }

    .Media_middle {
        width: 346px;
        height: 540px;
        float: left;
        margin: 40px 30px 0 30px;
    }

    .Media_center .Media_left .Media_img {
        width: 100%;
        height: 370px;
        margin-left: -200px;
        opacity: 0;
        overflow: hidden;
    }

    .Media_center .Media_middle .Media_img {
        width: 100%;
        height: 360px;
        margin-top: 200px;
        opacity: 0;
        overflow: hidden;
    }

    .Media_right {
        width: 346px;
        height: 540px;
        float: left;
    }

    .Media_center .Media_right .Media_img {
        width: 100%;
        height: 370px;
        margin-left: 200px;
        opacity: 0;
        overflow: hidden;
    }

    .Media_center .Media_img img {
        width: 100%;
        height: auto;
    }

    .Media_center .Media_left .Media_text, .Media_center .Media_middle .Media_text, .Media_right .Media_middle {
        padding: 0 30px;
        height: 175px;
        margin-top: 200px;
        background: url("../img/midtxt1.jpg") no-repeat;
        background-size: cover;
        opacity: 0;
    }

    .Media_center .Media_text h3 {
        font: bold 16px/16px microsoft yahei;
        padding: 28px 0 20px 0;
        color: #fff;
    }

    /* 第六屏样式 */
    #section6 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 111px;
        height: 31px;
        background: url("../mdimg/sent_t10.png") no-repeat;
    }

    #section6 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -140px;
        opacity: 0;
        width: 125px;
        height: 7px;
        background: url("../mdimg/sent_t11.png") no-repeat;
    }

    .photobox .swiper-wrapper .swiper-slide {
        width: 640px;
        height: 100%;
    }

    .photobox .swiper-wrapper .swiper-slide .phobg {
        width: 100%;
        border: 15px solid #7a787a;
        position: absolute;
        top: 50%;
        height: 55%;
        margin-top: -27.5%;
    }

    .photobox .swiper-container .swiper-slide .photo_mask {
        width: 100%;
        padding: 15px;
        height: 55%;
        position: absolute;
        left: 0;
        top: 50%;
        margin-top: -27.5%;
        background: rgba(0, 0, 0, 0.8);
        z-index: 9;
    }

    .photobox .swiper-container .swiper-slide-active .photo_mask {
        background: rgba(0, 0, 0, 0);
    }

    .photobox .swiper-wrapper .swiper-slide .ph_bottom .phot1 {
        content: "";
        display: block;
        margin-left: auto;
        margin-right: auto;
        width: 1px;
        height: 50px;
        background: #c6c9cd;
        transition: 1s;
        transform-origin: top;
        transform: scale(1, 0);
    }

    .photobox .swiper-wrapper .swiper-slide.swiper-slide-active .ph_bottom .phot2 {
        transition: 0.8s 0.8s;
        opacity: 1;
        font-size: 14px;
    }

    .photobox .swiper-wrapper .swiper-slide .ph_bottom .phot3 {
        content: "";
        display: block;
        margin-left: auto;
        margin-right: auto;
        width: 1px;
        height: 20px;
        background: #c6c9cd;
        margin-top: 5px;
        transition: 1s;
        transform-origin: bottom;
        transform: scale(1, 0);
    }

    /* 第七屏样式 */
    #section7 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 110px;
        height: 31px;
        background: url("../mdimg/sent_t12.png") no-repeat;
    }

    #section7 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -110px;
        opacity: 0;
        width: 68px;
        height: 7px;
        background: url("../mdimg/sent_t13.png") no-repeat;
    }

    .contactbox .conta8 .wx1 {
        width: 150px;
        height: 150px;
        background: url("../mdimg/wx1.png") no-repeat;
        display: block;
    }

    .contactbox .conta8 .wx2 {
        width: 150px;
        height: 150px;
        background: url("../mdimg/wx2.png") no-repeat;
        display: block;
    }
}

@media screen and (max-width:1599px){
    /* 第二屏样式 */
    .fullcontent {
        position: absolute;
        left: 50%;
        top: 0;
        margin-left: -425px;
        width: 850px;
        height: 100%;
    }
    .piti {
        position: relative;
        text-align: center;
        width: 100%;
        margin-left: 49px;
        height: 170px;
        float: left;
    }

    .piti .titie_1 {
        position: relative;
        top: -90px;
        opacity: 0;
        left: 50%;
        margin-left: -122px;
        width: 146px;
        height: 170px;
        background: url("../mdimg/sen2_t1.png") no-repeat;
    }

    #section2 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 110px;
        height: 32px;
        background: url("../mdimg/sent_2.png") no-repeat;
    }

    #section2 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -128px;
        opacity: 0;
        width: 105px;
        height: 7px;
        background: url("../mdimg/sent_t3.png") no-repeat;
    }

    .introduction_bottom {
        float: left;
        margin-top: 0;
    }

    /* 第三屏样式 */
    .Project_box .Project_left {
        width: 280px;
    }
    #section3 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 111px;
        height: 31px;
        background: url("../mdimg/sent_t4.png") no-repeat;
    }

    #section3 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -148px;
        opacity: 0;
        width: 137px;
        height: 8px;
        background: url("../mdimg/sent_t5.png") no-repeat;
    }

    .Project_middle {
        width: 280px;
        height: 380px;
    }

    .Project_right {
        width: 246px;
        height: 206px;
        margin-top: 174px;
    }

    .Project_left .Project_one {
        height: 168px;
    }

    .Project_left .Project_two {
        width: 170px;
        height: 220px;
    }

    .Project_three .Prtxt4 {
        width: 390px;
        height: 80px;
        position: absolute;
        left: 212px;
        top: 204px;
        text-align: center;
        background: url("../img/order1.png") no-repeat;
        font: bold 18px/80px microsoft yahei;
        padding-left: 10px;
        color: #fff;
        opacity: 0;
    }

    .Project_one .Prtxt1 {
        position: absolute;
        top: -70%;
        width: 100%;
        text-align: center;
        font: bold 14px/14px microsoft yahei;
        color: #fff;
        opacity: 0;
    }

    .Project_one .Pra1 {
        width: 36px;
        height: 36px;
        background: url("../img/pra1.png") no-repeat;
        background-size: cover;
        position: absolute;
        left: 50%;
        top: -50%;
        margin-top: -18px;
        margin-left: -18px;
        opacity: 0;
    }

    .Project_one:hover .pr_order1 {
        width: calc(100% - 30px);
        height: calc(100% - 30px);
        left: 15px;
        top: 15px;
        opacity: 1;
    }

    .Project_two .Prtxt2 {
        position: absolute;
        top: 50%;
        width: 100%;
        text-align: center;
        font: bold 14px/14px Arial;
        color: #fff;
        text-transform: Uppercase;
        opacity: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;
    }

    .Project_two .Prtxt3 .prborder1 {
        width: 90%;
        height: 43px;
        border: 1px solid #ccc;
        display: block;
        margin-left: 5%;

    }

    .Project_two .Prtxt3 .prborder1 .prbg {
        width: 100%;
        height: 41px;
        margin: 1px;
        background: #ccc;
        display: block;
        font: bold 12px/41px microsoft yahei;
        color: #333;
    }

    .Project_four .Pra1 {
        width: 36px;
        height: 36px;
        background: url("../img/pra1.png") no-repeat;
        background-size: cover;
        position: absolute;
        left: 50%;
        top: 50%;
        margin-top: -18px;
        margin-left: -18px;
        opacity: 0;
    }

    .Project_four .Prtxt5 {
        width: 100%;
        text-align: center;
        position: absolute;
        top: -70%;
        font: bold 14px/14px microsoft yahei;
        color: #fff;
        opacity: 0;
    }

    /* 第四屏样式*/
    #section4 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 109px;
        height: 31px;
        background: url("../mdimg/sent_t6.png") no-repeat;
    }

    #section4 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -100px;
        opacity: 0;
        width: 53px;
        height: 7px;
        background: url("../mdimg/sent_t7.png") no-repeat;
    }
    .Team_member .swiper-container .swiper-wrapper .swiper-slide .swiper_img {
        height: 324px;
        position: relative;
        border: 10px solid #7a787a;
        overflow: hidden;
    }

    .Team_member .swiper-container .swiper-wrapper .swiper-slide .swiper_text h3 {
        padding: 10px 10px 0 10px;
        font: bold 14px/20px microsoft yahei;
        height: 20px;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;
    }

    .Team_member .swiper-container .swiper-wrapper .swiper-slide .swiper_text p {
        height: 36px;
        padding: 5px 10px 0 10px;
        font: normal 12px/20px microsoft yahei;
        overflow: hidden;
        color: #ccc;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    /* 第五屏样式 */
    #section5 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 111px;
        height: 31px;
        background: url("../mdimg/sent_t8.png") no-repeat;
    }

    #section5 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -114px;
        opacity: 0;
        width: 83px;
        height: 7px;
        background: url("../mdimg/sent_t9.png") no-repeat;
    }

    .Media_box .Media_left {
        width: 263px;
        height: 436px;
        float: left;
    }

    .Media_center .Media_left .Media_img {
        width: 100%;
        height: 290px;
        margin-left: -200px;
        opacity: 0;
    }

    .Media_center .Media_left .Media_text {
        padding: 0 20px;
        height: 140px;
        margin-top: 200px;
        background: url("../img/midtxt1.jpg") no-repeat;
        background-size: cover;
        opacity: 0;
    }

    .Media_center .Media_text p {
        font: normal 14px/24px microsoft yahei;
        color: #fff;
        height: 44px;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .Media_middle {
        width: 263px;
        height: 436px;
        float: left;
        margin: 20px 30px 0 30px;
    }

    .Media_center .Media_middle .Media_img {
        width: 100%;
        height: 290px;
        margin-top: 200px;
        opacity: 0;
    }

    .Media_center .Media_middle .Media_text {
        padding: 0 20px;
        height: 140px;
        margin-top: -200px;
        background: url("../img/midtxt2.jpg") no-repeat;
        background-size: cover;
        opacity: 0;
    }

    .Media_right {
        width: 263px;
        height: 436px;
        float: left;
    }

    .Media_center .Media_right .Media_img {
        width: 100%;
        height: 290px;
        margin-left: 200px;
        opacity: 0;
    }

    .Media_center .Media_right .Media_text {
        padding: 0 20px;
        height: 140px;
        margin-top: 200px;
        background: url("../img/midtxt3.jpg") no-repeat;
        background-size: cover;
        opacity: 0;
    }

    /*第六屏样式*/
    #section6 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 111px;
        height: 31px;
        background: url("../mdimg/sent_t10.png") no-repeat;
    }

    #section6 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -140px;
        opacity: 0;
        width: 125px;
        height: 7px;
        background: url("../mdimg/sent_t11.png") no-repeat;
    }
    .photobox .swiper-wrapper .swiper-slide {
        width: 490px;
        height: 100%;
    }

    .photobox .swiper-wrapper .swiper-slide .phobg {
        position: absolute;
        top: 50%;
        width: 100%;
        height: 50%;
        margin-top: -120px;
        border: 15px solid #7a787a;
    }

    .photobox .swiper-container .swiper-slide .photo_mask {
        width: 100%;
        padding: 15px;
        height: 50%;
        position: absolute;
        left: 0;
        top: 50%;
        margin-top: -120px;
        background: rgba(0, 0, 0, 0.8);
        z-index: 9;
    }

    .photobox .swiper-container .swiper-slide-active .photo_mask {
        background: rgba(0, 0, 0, 0);
    }

    /*第七屏样式*/
    #section7 .piti .titie_2 {
        position: absolute;
        top: 89px;
        left: 50%;
        margin-left: -500px;
        opacity: 0;
        width: 110px;
        height: 31px;
        background: url("../mdimg/sent_t12.png") no-repeat;
    }

    #section7 .piti .titie_3 {
        position: absolute;
        top: 129px;
        left: 50%;
        margin-left: -110px;
        opacity: 0;
        width: 68px;
        height: 7px;
        background: url("../mdimg/sent_t13.png") no-repeat;
    }
    .contactbox .conta8 .wx1 {
        width: 80px;
        height: 80px;
        background: url("../img/wx1.jpg") no-repeat;
        background-size: cover;
        display: block;
    }

    .contactbox .conta8 .wx2 {
        width: 80px;
        height: 80px;
        background: url("../img/wx2.jpg") no-repeat;
        background-size: cover;
        display: block;
    }

    .contactbox .conta1 {
        width: 1px;
        height: 20px;
        background: #fff;
        display: inline-block;
        margin-top: 10px;
        opacity: 0;
    }

    .contactbox .conta6 {
        width: 1px;
        height: 20px;
        background: #fff;
        display: inline-block;
        margin-top: 10px;
        opacity: 0;
    }

    .contactbox .conta8 span i {
        margin-top: 10px;
        display: block;
        font-size: 12px;
    }
}